APA ציטוט

Ewertz, M., & Duffy, S. W. (1988). Risk of breast cancer in relation to reproductive factors in Denmark. Nature Publishing Group.

Citação norma Chicago

Ewertz, M., and S. W. Duffy. Risk of Breast Cancer in Relation to Reproductive Factors in Denmark. Nature Publishing Group, 1988.

ציטוט MLA

Ewertz, M., and S. W. Duffy. Risk of Breast Cancer in Relation to Reproductive Factors in Denmark. Nature Publishing Group, 1988.